COMPUTER SCIENCE TASK !!

I have three (3) separate assignments I need help with (see attached files). Each assignment provides a scenario in a specific area of Computer Science and then asks a few questions. Insert the responses in the attached files using OpenDocument text format. The areas covered are Operating Systems, Cryptography, and Network Security. the answers must be very detailed and thorough. ALL INFORMATION IS MENTIONED IN FILE ATTACHED THERE SHOULD NOT BE PLAGIARISM. I WILL BE CHECKING WORK FOR PLAGIARISM !! ==================================================== I NEED THEM IN 3 DAYS ( 14 OCTOBER Price : $ 35 ======================================================